"I found the footage difficult to watch as my words and actions under intoxication and in that environment, are not a true reflection of myself," his statement said.

Despite his resignation, Mr Dickson's name will still appear on the Senate ballot.

The recording was captured by an undercover journalist and was leaked to Nine's A Current Affair which broadcast the footage on Monday night.

Al Jazeera has said in a statement overnight that it had not run the footage in its report and condemns the "unauthorised use of its material."

The footage comes more than a month after the Al Jazeera investigation released footage from a meeting between Mr Dickson, Senator Hanson's chief of staff James Ashby and the National Rifle Association in Washington, DC in September 2018.